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Elastic wave-mode separation in 2D transversely isotropic media using optical flow

文献类型：期刊论文

作者Wang, Xiaoyi1,3,4; Lu, Yongming2; Zhang, Jianfeng2
刊名GEOPHYSICAL PROSPECTING
出版日期2021-02-01
卷号69期号:2页码:349-371
关键词Anisotropy Horn– Schunck algorithm Wave‐ mode separation Elastics Multicomponent
ISSN号0016-8025
DOI10.1111/1365-2478.13061
英文摘要Wave-mode separation is a critical step in anisotropic elastic-wave imaging. To avoid high computational costs and additional corrections, we apply a separation formula in the space domain that projects Cartesian components of the elastic wavefield onto the polarization vectors in the orthogonal direction. By solving the Christoffel equation, we implement the conversion from the phase velocity direction to the polarization direction. We use similarity between the seismic wave propagation and the optical flow problem to calculate the phase angle based on the Horn-Schunck algorithm. Compared with the conventional Poynting vector, the optical flow vector is more robust, particularly for complex underground structures. We demonstrate the performance of the proposed approach for two-dimensional transversely isotropic media with three numerical examples and discuss the potential extension to three-dimensional media.
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000607919200005
出版者WILEY
源URL[http://ir.iggcas.ac.cn/handle/132A11/99985]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Lu, Yongming
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
2.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xiaoyi,Lu, Yongming,Zhang, Jianfeng. Elastic wave-mode separation in 2D transversely isotropic media using optical flow[J]. GEOPHYSICAL PROSPECTING,2021,69(2):349-371.
APA Wang, Xiaoyi,Lu, Yongming,&Zhang, Jianfeng.(2021).Elastic wave-mode separation in 2D transversely isotropic media using optical flow.GEOPHYSICAL PROSPECTING,69(2),349-371.
MLA Wang, Xiaoyi,et al."Elastic wave-mode separation in 2D transversely isotropic media using optical flow".GEOPHYSICAL PROSPECTING 69.2(2021):349-371.

入库方式： OAI收割

来源：地质与地球物理研究所

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